Stabilization of the swelling soil for earth construction
 
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1
Faculty of Science, Helwan University, Cairo, Egypt
 
2
G&W Science and Engineering, Cairo, Egypt
 
3
Faculty of Engineering, Shoubra - Banha University, Cairo, Egypt
 
 
Publication date: 2020-09-02
 
 
Cement Wapno Beton 25(3) 198-207 (2020)
 
ABSTRACT
This study is concerned with the method of cast earth as part of an investigation series on earth construction. The effect of two clay swelling inhibitors; polyethylene glycol [PEG] and of carboxymethyl cellulose [CMC] on the swelling of a clay-bearing soil are studied to enable the stabilization of the soil with CEM I 42.5 N. The soil composed of 14% clay, quartz, and calcite, is stabilized with 10% cement. 3% polycarboxylate superplasticizer is added relative to the mass of the cement, to gain the soil pourable properties. The results show that the PEG and CMC clay-swelling inhibitors reduce the expansion of the soil by ~30 and ~40% and lead to a maximum increase of 24 and 46% in the 90-day compressive strength respectively. The interactions between clay, cement, and swelling inhibitors are discussed. The findings allow advantageous applications for producing building units for construction purposes in desert areas.
ISSN:1425-8129
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